WP Mail SMTP by WPForms – The Most… vs Cart66 to Mailchimp (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
WP Mail SMTP by WPForms – The Most…
4.0M+ active installs
Free
Quick Verdict
As of April 2026, WP Mail SMTP by WPForms – The Most… has a higher user rating (4.8/5 from 5,089 reviews) and leads in active installations (4.0M+ vs 10). Both are free WordPress plugins. WP Mail SMTP by WPForms – The Most… has accumulated 76M+ total downloads while Cart66 to Mailchimp has 2.0K+.
Detailed Comparison
| Metric | WP Mail SMTP by WPForms – The Most… | Cart66 to Mailchimp | |
|---|---|---|---|
| Rating | 4.8/5 | ◄ | N/A |
| Total Reviews | 5,089 | ◄ | 0 |
| Active Installs | 4.0M+ | ◄ | 10 |
| Total Downloads | 76M+ | ◄ | 2.0K+ |
| Support Resolution | 88% | N/A | |
| Last Updated | 4 months ago | ◄ | 12 years ago |
| First Released | 2007 | 2013 | |
| Age | 19 years | 13 years | |
| WP Requires | 5.5+ | 2.8.2+ | |
| PHP Requires | 7.4+ | false+ | |
| Business Model | Free | Free | |
| Latest Version | 4.7.1 | 1.4 |
Rating Breakdown
WP Mail SMTP by WPForms – The Most…
Cart66 to Mailchimp
Download Trends
Recent Reviews
WP Mail SMTP by WPForms – The Most… Reviews
Great plugin!
Easy to install and configure. Works like a charm!
Love it
easy and reliable
Does the Job, Needs Improvement
WP Mail SMTP by WPForms works well for email delivery, with easy setup. However, it lacks some advanced features and customization. 4 stars! This topic was modified 2 days, 1 hour ago by janel
Cart66 to Mailchimp Reviews
No reviews yet
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Frequently Asked Questions
Is WP Mail SMTP by WPForms – The Most… or Cart66 to Mailchimp more popular?
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Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.